Android ImageShow的使用方法（1）【转】

该例子来自API Demo

/*

* Copyright (C) 2007 The Android Open Source Project

*

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

*

* http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*/

package com.example.android.apis.view;

import com.example.android.apis.R;

import android.app.Activity;

import android.content.Context;

import android.os.Bundle;

import android.view.View;

import android.view.ViewGroup;

import android.view.Window;

import android.view.animation.AnimationUtils;

import android.widget.AdapterView;

import android.widget.BaseAdapter;

import android.widget.Gallery;

import android.widget.Gallery.LayoutParams;

import android.widget.ImageSwitcher;

import android.widget.ImageView;

import android.widget.ViewSwitcher;

public class ImageSwitcher1 extends Activity implements

AdapterView.OnItemSelectedListener, ViewSwitcher.ViewFactory {

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);

setContentView(R.layout.image_switcher_1);

mSwitcher = (ImageSwitcher) findViewById(R.id.switcher);

//提供显示图片的地方

mSwitcher.setFactory(this);

//系统的anim中的fade_in.xml

mSwitcher.setInAnimation(AnimationUtils.loadAnimation(this,

android.R.anim.fade_in));

//系统的anim中的fade_out.xml

mSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this,

android.R.anim.fade_out));

Gallery g = (Gallery) findViewById(R.id.gallery);

g.setAdapter(new ImageAdapter(this));

g.setOnItemSelectedListener(this);

}

public void onItemSelected(AdapterView parent, View v, int position, long id) {

mSwitcher.setImageResource(mImageIds[position]);

}

public void onNothingSelected(AdapterView parent) {

}

//设置ImgaeSwitcher的为IamgeView的变化并且设置其属性，除此之外可以设置第一次加载的时候ImageSwitcher显示 的图片默认第一张

public View makeView() {

ImageView i = new ImageView(this);

i.setBackgroundColor(0xFF000000);

i.setScaleType(ImageView.ScaleType.FIT_CENTER);

i.setLayoutParams(new ImageSwitcher.LayoutParams(LayoutParams.FILL_PARENT,

LayoutParams.FILL_PARENT));

return i;

}

private ImageSwitcher mSwitcher;

public class ImageAdapter extends BaseAdapter {

public ImageAdapter(Context c) {

mContext = c;

}

public int getCount() {

return mThumbIds.length;

}

public Object getItem(int position) {

return position;

}

public long getItemId(int position) {

return position;

}

public View getView(int position, View convertView, ViewGroup parent) {

ImageView i = new ImageView(mContext);

i.setImageResource(mThumbIds[position]);

i.setAdjustViewBounds(true);

i.setLayoutParams(new Gallery.LayoutParams(

LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));

i.setBackgroundResource(R.drawable.picture_frame);

return i;

}

private Context mContext;

}

private Integer[] mThumbIds = {

R.drawable.sample_thumb_0, R.drawable.sample_thumb_1,

R.drawable.sample_thumb_2, R.drawable.sample_thumb_3,

R.drawable.sample_thumb_4, R.drawable.sample_thumb_5,

R.drawable.sample_thumb_6, R.drawable.sample_thumb_7};

private Integer[] mImageIds = {

R.drawable.sample_0, R.drawable.sample_1, R.drawable.sample_2,

R.drawable.sample_3, R.drawable.sample_4, R.drawable.sample_5,

R.drawable.sample_6, R.drawable.sample_7};

}

//frameworks asecore es esanimfade_in.xml

Java代码

1. < alpha xmlns:android="http://schemas.android.com/apk/res/android" android:interpolator="@anim/accelerate_interpolator"

2. android:fromAlpha="1.0"

3. android:toAlpha="0.0"

4. android:duration="@android:integer/config_mediumAnimTime"

5. / >

< alpha xmlns:android="http://schemas.android.com/apk/res/android" android:interpolator="@anim/accelerate_interpolator"

android:fromAlpha="1.0"

android:toAlpha="0.0"

android:duration="@android:integer/config_mediumAnimTime"

/ >

//frameworks asecore es esanimfade_out.xml 阅读全文

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